1 /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
119 #include <openssl/err.h>
120 #include <openssl/rand.h>
121 #include <openssl/x509.h>
122 #include <openssl/ssl.h>
125 #define COOKIE_SECRET_LENGTH 16
128 int verify_error
=X509_V_OK
;
129 int verify_return_error
=0;
130 unsigned char cookie_secret
[COOKIE_SECRET_LENGTH
];
131 int cookie_initialized
=0;
133 int MS_CALLBACK
verify_callback(int ok
, X509_STORE_CTX
*ctx
)
138 err_cert
=X509_STORE_CTX_get_current_cert(ctx
);
139 err
= X509_STORE_CTX_get_error(ctx
);
140 depth
= X509_STORE_CTX_get_error_depth(ctx
);
142 BIO_printf(bio_err
,"depth=%d ",depth
);
145 X509_NAME_print_ex(bio_err
, X509_get_subject_name(err_cert
),
147 BIO_puts(bio_err
, "\n");
150 BIO_puts(bio_err
, "<no cert>\n");
153 BIO_printf(bio_err
,"verify error:num=%d:%s\n",err
,
154 X509_verify_cert_error_string(err
));
155 if (verify_depth
>= depth
)
157 if (!verify_return_error
)
159 verify_error
=X509_V_OK
;
164 verify_error
=X509_V_ERR_CERT_CHAIN_TOO_LONG
;
169 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
170 BIO_puts(bio_err
,"issuer= ");
171 X509_NAME_print_ex(bio_err
, X509_get_issuer_name(err_cert
),
173 BIO_puts(bio_err
, "\n");
175 case X509_V_ERR_CERT_NOT_YET_VALID
:
176 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
177 BIO_printf(bio_err
,"notBefore=");
178 ASN1_TIME_print(bio_err
,X509_get_notBefore(err_cert
));
179 BIO_printf(bio_err
,"\n");
181 case X509_V_ERR_CERT_HAS_EXPIRED
:
182 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
183 BIO_printf(bio_err
,"notAfter=");
184 ASN1_TIME_print(bio_err
,X509_get_notAfter(err_cert
));
185 BIO_printf(bio_err
,"\n");
187 case X509_V_ERR_NO_EXPLICIT_POLICY
:
188 policies_print(bio_err
, ctx
);
191 if (err
== X509_V_OK
&& ok
== 2)
192 policies_print(bio_err
, ctx
);
194 BIO_printf(bio_err
,"verify return:%d\n",ok
);
198 int set_cert_stuff(SSL_CTX
*ctx
, char *cert_file
, char *key_file
)
200 if (cert_file
!= NULL
)
207 if (SSL_CTX_use_certificate_file(ctx
,cert_file
,
208 SSL_FILETYPE_PEM
) <= 0)
210 BIO_printf(bio_err
,"unable to get certificate from '%s'\n",cert_file
);
211 ERR_print_errors(bio_err
);
214 if (key_file
== NULL
) key_file
=cert_file
;
215 if (SSL_CTX_use_PrivateKey_file(ctx
,key_file
,
216 SSL_FILETYPE_PEM
) <= 0)
218 BIO_printf(bio_err
,"unable to get private key from '%s'\n",key_file
);
219 ERR_print_errors(bio_err
);
224 In theory this is no longer needed
226 x509=SSL_get_certificate(ssl);
230 pktmp = X509_get_pubkey(x509);
231 EVP_PKEY_copy_parameters(pktmp,
232 SSL_get_privatekey(ssl));
233 EVP_PKEY_free(pktmp);
238 /* If we are using DSA, we can copy the parameters from
242 /* Now we know that a key and cert have been set against
244 if (!SSL_CTX_check_private_key(ctx
))
246 BIO_printf(bio_err
,"Private key does not match the certificate public key\n");
253 int set_cert_key_stuff(SSL_CTX
*ctx
, X509
*cert
, EVP_PKEY
*key
,
254 STACK_OF(X509
) *chain
)
258 if (SSL_CTX_use_certificate(ctx
,cert
) <= 0)
260 BIO_printf(bio_err
,"error setting certificate\n");
261 ERR_print_errors(bio_err
);
264 if (SSL_CTX_use_PrivateKey(ctx
,key
) <= 0)
266 BIO_printf(bio_err
,"error setting private key\n");
267 ERR_print_errors(bio_err
);
272 /* Now we know that a key and cert have been set against
274 if (!SSL_CTX_check_private_key(ctx
))
276 BIO_printf(bio_err
,"Private key does not match the certificate public key\n");
279 if (chain
&& !SSL_CTX_set1_chain(ctx
, chain
))
281 BIO_printf(bio_err
,"error setting certificate chain\n");
282 ERR_print_errors(bio_err
);
288 int ssl_print_sigalgs(BIO
*out
, SSL
*s
)
291 nsig
= SSL_get_sigalgs(s
, -1, NULL
, NULL
, NULL
, NULL
, NULL
);
295 BIO_puts(out
, "Signature Algorithms: ");
296 for (i
= 0; i
< nsig
; i
++)
298 int hash_nid
, sign_nid
;
299 unsigned char rhash
, rsign
;
300 const char *sstr
= NULL
;
301 SSL_get_sigalgs(s
, i
, &sign_nid
, &hash_nid
, NULL
,
305 if (sign_nid
== EVP_PKEY_RSA
)
307 else if(sign_nid
== EVP_PKEY_DSA
)
309 else if(sign_nid
== EVP_PKEY_EC
)
312 BIO_printf(out
,"%s+", sstr
);
314 BIO_printf(out
,"0x%02X+", (int)rsign
);
315 if (hash_nid
!= NID_undef
)
316 BIO_printf(out
, "%s", OBJ_nid2sn(hash_nid
));
318 BIO_printf(out
,"0x%02X", (int)rhash
);
324 int ssl_print_curves(BIO
*out
, SSL
*s
)
326 int i
, ncurves
, *curves
, nid
;
328 ncurves
= SSL_get1_curves(s
, NULL
);
331 curves
= OPENSSL_malloc(ncurves
* sizeof(int));
332 SSL_get1_curves(s
, curves
);
334 BIO_puts(out
, "Supported Elliptic Curves: ");
335 for (i
= 0; i
< ncurves
; i
++)
340 /* If unrecognised print out hex version */
341 if (nid
& TLSEXT_nid_unknown
)
342 BIO_printf(out
, "0x%04X", nid
& 0xFFFF);
345 /* Use NIST name for curve if it exists */
346 cname
= EC_curve_nid2nist(nid
);
348 cname
= OBJ_nid2sn(nid
);
349 BIO_printf(out
, "%s", cname
);
352 BIO_puts(out
, "\nShared Elliptic curves: ");
353 OPENSSL_free(curves
);
354 ncurves
= SSL_get_shared_curve(s
, -1);
355 for (i
= 0; i
< ncurves
; i
++)
359 nid
= SSL_get_shared_curve(s
, i
);
360 cname
= EC_curve_nid2nist(nid
);
362 cname
= OBJ_nid2sn(nid
);
363 BIO_printf(out
, "%s", cname
);
366 BIO_puts(out
, "NONE");
372 long MS_CALLBACK
bio_dump_callback(BIO
*bio
, int cmd
, const char *argp
,
373 int argi
, long argl
, long ret
)
377 out
=(BIO
*)BIO_get_callback_arg(bio
);
378 if (out
== NULL
) return(ret
);
380 if (cmd
== (BIO_CB_READ
|BIO_CB_RETURN
))
382 BIO_printf(out
,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
383 (void *)bio
,argp
,(unsigned long)argi
,ret
,ret
);
384 BIO_dump(out
,argp
,(int)ret
);
387 else if (cmd
== (BIO_CB_WRITE
|BIO_CB_RETURN
))
389 BIO_printf(out
,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
390 (void *)bio
,argp
,(unsigned long)argi
,ret
,ret
);
391 BIO_dump(out
,argp
,(int)ret
);
396 void MS_CALLBACK
apps_ssl_info_callback(const SSL
*s
, int where
, int ret
)
401 w
=where
& ~SSL_ST_MASK
;
403 if (w
& SSL_ST_CONNECT
) str
="SSL_connect";
404 else if (w
& SSL_ST_ACCEPT
) str
="SSL_accept";
405 else str
="undefined";
407 if (where
& SSL_CB_LOOP
)
409 BIO_printf(bio_err
,"%s:%s\n",str
,SSL_state_string_long(s
));
411 else if (where
& SSL_CB_ALERT
)
413 str
=(where
& SSL_CB_READ
)?"read":"write";
414 BIO_printf(bio_err
,"SSL3 alert %s:%s:%s\n",
416 SSL_alert_type_string_long(ret
),
417 SSL_alert_desc_string_long(ret
));
419 else if (where
& SSL_CB_EXIT
)
422 BIO_printf(bio_err
,"%s:failed in %s\n",
423 str
,SSL_state_string_long(s
));
426 BIO_printf(bio_err
,"%s:error in %s\n",
427 str
,SSL_state_string_long(s
));
433 void MS_CALLBACK
msg_cb(int write_p
, int version
, int content_type
, const void *buf
, size_t len
, SSL
*ssl
, void *arg
)
436 const char *str_write_p
, *str_version
, *str_content_type
= "", *str_details1
= "", *str_details2
= "";
438 str_write_p
= write_p
? ">>>" : "<<<";
443 str_version
= "SSL 2.0";
446 str_version
= "SSL 3.0 ";
449 str_version
= "TLS 1.0 ";
452 str_version
= "TLS 1.1 ";
455 str_version
= "TLS 1.2 ";
458 str_version
= "DTLS 1.0 ";
461 str_version
= "DTLS 1.0 (bad) ";
467 if (version
== SSL2_VERSION
)
469 str_details1
= "???";
473 switch (((const unsigned char*)buf
)[0])
476 str_details1
= ", ERROR:";
477 str_details2
= " ???";
480 unsigned err
= (((const unsigned char*)buf
)[1]<<8) + ((const unsigned char*)buf
)[2];
485 str_details2
= " NO-CIPHER-ERROR";
488 str_details2
= " NO-CERTIFICATE-ERROR";
491 str_details2
= " BAD-CERTIFICATE-ERROR";
494 str_details2
= " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
501 str_details1
= ", CLIENT-HELLO";
504 str_details1
= ", CLIENT-MASTER-KEY";
507 str_details1
= ", CLIENT-FINISHED";
510 str_details1
= ", SERVER-HELLO";
513 str_details1
= ", SERVER-VERIFY";
516 str_details1
= ", SERVER-FINISHED";
519 str_details1
= ", REQUEST-CERTIFICATE";
522 str_details1
= ", CLIENT-CERTIFICATE";
528 if (version
== SSL3_VERSION
||
529 version
== TLS1_VERSION
||
530 version
== DTLS1_VERSION
||
531 version
== DTLS1_BAD_VER
)
533 switch (content_type
)
536 str_content_type
= "ChangeCipherSpec";
539 str_content_type
= "Alert";
542 str_content_type
= "Handshake";
546 if (content_type
== 21) /* Alert */
548 str_details1
= ", ???";
552 switch (((const unsigned char*)buf
)[0])
555 str_details1
= ", warning";
558 str_details1
= ", fatal";
562 str_details2
= " ???";
563 switch (((const unsigned char*)buf
)[1])
566 str_details2
= " close_notify";
569 str_details2
= " unexpected_message";
572 str_details2
= " bad_record_mac";
575 str_details2
= " decryption_failed";
578 str_details2
= " record_overflow";
581 str_details2
= " decompression_failure";
584 str_details2
= " handshake_failure";
587 str_details2
= " bad_certificate";
590 str_details2
= " unsupported_certificate";
593 str_details2
= " certificate_revoked";
596 str_details2
= " certificate_expired";
599 str_details2
= " certificate_unknown";
602 str_details2
= " illegal_parameter";
605 str_details2
= " unknown_ca";
608 str_details2
= " access_denied";
611 str_details2
= " decode_error";
614 str_details2
= " decrypt_error";
617 str_details2
= " export_restriction";
620 str_details2
= " protocol_version";
623 str_details2
= " insufficient_security";
626 str_details2
= " internal_error";
629 str_details2
= " user_canceled";
632 str_details2
= " no_renegotiation";
635 str_details2
= " unsupported_extension";
638 str_details2
= " certificate_unobtainable";
641 str_details2
= " unrecognized_name";
644 str_details2
= " bad_certificate_status_response";
647 str_details2
= " bad_certificate_hash_value";
650 str_details2
= " unknown_psk_identity";
656 if (content_type
== 22) /* Handshake */
658 str_details1
= "???";
662 switch (((const unsigned char*)buf
)[0])
665 str_details1
= ", HelloRequest";
668 str_details1
= ", ClientHello";
671 str_details1
= ", ServerHello";
674 str_details1
= ", HelloVerifyRequest";
677 str_details1
= ", Certificate";
680 str_details1
= ", ServerKeyExchange";
683 str_details1
= ", CertificateRequest";
686 str_details1
= ", ServerHelloDone";
689 str_details1
= ", CertificateVerify";
692 str_details1
= ", ClientKeyExchange";
695 str_details1
= ", Finished";
701 #ifndef OPENSSL_NO_HEARTBEATS
702 if (content_type
== 24) /* Heartbeat */
704 str_details1
= ", Heartbeat";
708 switch (((const unsigned char*)buf
)[0])
711 str_details1
= ", HeartbeatRequest";
714 str_details1
= ", HeartbeatResponse";
722 BIO_printf(bio
, "%s %s%s [length %04lx]%s%s\n", str_write_p
, str_version
, str_content_type
, (unsigned long)len
, str_details1
, str_details2
);
728 BIO_printf(bio
, " ");
734 for (i
= 0; i
< num
; i
++)
736 if (i
% 16 == 0 && i
> 0)
737 BIO_printf(bio
, "\n ");
738 BIO_printf(bio
, " %02x", ((const unsigned char*)buf
)[i
]);
741 BIO_printf(bio
, " ...");
742 BIO_printf(bio
, "\n");
744 (void)BIO_flush(bio
);
747 void MS_CALLBACK
tlsext_cb(SSL
*s
, int client_server
, int type
,
748 unsigned char *data
, int len
,
756 case TLSEXT_TYPE_server_name
:
757 extname
= "server name";
760 case TLSEXT_TYPE_max_fragment_length
:
761 extname
= "max fragment length";
764 case TLSEXT_TYPE_client_certificate_url
:
765 extname
= "client certificate URL";
768 case TLSEXT_TYPE_trusted_ca_keys
:
769 extname
= "trusted CA keys";
772 case TLSEXT_TYPE_truncated_hmac
:
773 extname
= "truncated HMAC";
776 case TLSEXT_TYPE_status_request
:
777 extname
= "status request";
780 case TLSEXT_TYPE_user_mapping
:
781 extname
= "user mapping";
784 case TLSEXT_TYPE_client_authz
:
785 extname
= "client authz";
788 case TLSEXT_TYPE_server_authz
:
789 extname
= "server authz";
792 case TLSEXT_TYPE_cert_type
:
793 extname
= "cert type";
796 case TLSEXT_TYPE_elliptic_curves
:
797 extname
= "elliptic curves";
800 case TLSEXT_TYPE_ec_point_formats
:
801 extname
= "EC point formats";
804 case TLSEXT_TYPE_srp
:
808 case TLSEXT_TYPE_signature_algorithms
:
809 extname
= "signature algorithms";
812 case TLSEXT_TYPE_use_srtp
:
813 extname
= "use SRTP";
816 case TLSEXT_TYPE_heartbeat
:
817 extname
= "heartbeat";
820 case TLSEXT_TYPE_session_ticket
:
821 extname
= "session ticket";
824 case TLSEXT_TYPE_renegotiate
:
825 extname
= "renegotiation info";
828 #ifdef TLSEXT_TYPE_opaque_prf_input
829 case TLSEXT_TYPE_opaque_prf_input
:
830 extname
= "opaque PRF input";
833 #ifdef TLSEXT_TYPE_next_proto_neg
834 case TLSEXT_TYPE_next_proto_neg
:
835 extname
= "next protocol";
845 BIO_printf(bio
, "TLS %s extension \"%s\" (id=%d), len=%d\n",
846 client_server
? "server": "client",
848 BIO_dump(bio
, (char *)data
, len
);
849 (void)BIO_flush(bio
);
852 int MS_CALLBACK
generate_cookie_callback(SSL
*ssl
, unsigned char *cookie
, unsigned int *cookie_len
)
854 unsigned char *buffer
, result
[EVP_MAX_MD_SIZE
];
855 unsigned int length
, resultlength
;
858 struct sockaddr_in s4
;
860 struct sockaddr_in6 s6
;
864 /* Initialize a random secret */
865 if (!cookie_initialized
)
867 if (!RAND_bytes(cookie_secret
, COOKIE_SECRET_LENGTH
))
869 BIO_printf(bio_err
,"error setting random cookie secret\n");
872 cookie_initialized
= 1;
875 /* Read peer information */
876 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl
), &peer
);
878 /* Create buffer with peer's address and port */
880 switch (peer
.sa
.sa_family
)
883 length
+= sizeof(struct in_addr
);
884 length
+= sizeof(peer
.s4
.sin_port
);
888 length
+= sizeof(struct in6_addr
);
889 length
+= sizeof(peer
.s6
.sin6_port
);
896 buffer
= OPENSSL_malloc(length
);
900 BIO_printf(bio_err
,"out of memory\n");
904 switch (peer
.sa
.sa_family
)
909 sizeof(peer
.s4
.sin_port
));
910 memcpy(buffer
+ sizeof(peer
.s4
.sin_port
),
912 sizeof(struct in_addr
));
918 sizeof(peer
.s6
.sin6_port
));
919 memcpy(buffer
+ sizeof(peer
.s6
.sin6_port
),
921 sizeof(struct in6_addr
));
929 /* Calculate HMAC of buffer using the secret */
930 HMAC(EVP_sha1(), cookie_secret
, COOKIE_SECRET_LENGTH
,
931 buffer
, length
, result
, &resultlength
);
932 OPENSSL_free(buffer
);
934 memcpy(cookie
, result
, resultlength
);
935 *cookie_len
= resultlength
;
940 int MS_CALLBACK
verify_cookie_callback(SSL
*ssl
, unsigned char *cookie
, unsigned int cookie_len
)
942 unsigned char *buffer
, result
[EVP_MAX_MD_SIZE
];
943 unsigned int length
, resultlength
;
946 struct sockaddr_in s4
;
948 struct sockaddr_in6 s6
;
952 /* If secret isn't initialized yet, the cookie can't be valid */
953 if (!cookie_initialized
)
956 /* Read peer information */
957 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl
), &peer
);
959 /* Create buffer with peer's address and port */
961 switch (peer
.sa
.sa_family
)
964 length
+= sizeof(struct in_addr
);
965 length
+= sizeof(peer
.s4
.sin_port
);
969 length
+= sizeof(struct in6_addr
);
970 length
+= sizeof(peer
.s6
.sin6_port
);
977 buffer
= OPENSSL_malloc(length
);
981 BIO_printf(bio_err
,"out of memory\n");
985 switch (peer
.sa
.sa_family
)
990 sizeof(peer
.s4
.sin_port
));
991 memcpy(buffer
+ sizeof(peer
.s4
.sin_port
),
993 sizeof(struct in_addr
));
999 sizeof(peer
.s6
.sin6_port
));
1000 memcpy(buffer
+ sizeof(peer
.s6
.sin6_port
),
1002 sizeof(struct in6_addr
));
1010 /* Calculate HMAC of buffer using the secret */
1011 HMAC(EVP_sha1(), cookie_secret
, COOKIE_SECRET_LENGTH
,
1012 buffer
, length
, result
, &resultlength
);
1013 OPENSSL_free(buffer
);
1015 if (cookie_len
== resultlength
&& memcmp(result
, cookie
, resultlength
) == 0)